Cassandra 简明教程
Cassandra - CQL Datatypes
CQL 提供了一组丰富内置的数据类型,包括集合类型。除了这些数据类型外,用户还可以创建自己的自定义数据类型。下表提供 CQL 中可用的一系列内置数据类型。
Data Type |
Constants |
Description |
ascii |
strings |
Represents ASCII character string |
bigint |
bigint |
Represents 64-bit signed long |
blob |
blobs |
Represents arbitrary bytes |
Boolean |
booleans |
Represents true or false |
counter |
integers |
Represents counter column |
decimal |
integers, floats |
Represents variable-precision decimal |
double |
integers |
表示 64 位 IEEE-754 浮点数 |
float |
integers, floats |
表示 32 位 IEEE-754 浮点数 |
inet |
strings |
表示 IP 地址,IPv4 或 IPv6 |
int |
integers |
Represents 32-bit signed int |
text |
strings |
Represents UTF8 encoded string |
timestamp |
integers, strings |
Represents a timestamp |
timeuuid |
uuids |
Represents type 1 UUID |
uuid |
uuids |
表示类型 1 或类型 4 |
UUID |
||
varchar |
strings |
Represents uTF8 encoded string |
varint |
integers |
Represents arbitrary-precision integer |